UNISONIC TECHNOLOGIES CO., LTD UPSSL150 Preliminary LINEAR INTEGRATED CIRCUIT NON ISOLATED BUCK CONSTANT CURRENT LED DRIVER IC DESCRIPTION UPSSL150 is a high precision LED BUCK constant current driver chip. The chip operates in the inductor current critical continuous mode, which is suitable for the non isolated buck LED constant current power supply with 85Vac~265Vac full range input voltage. UPSSL150 chip integrated 500V power switch by patent demagnetization detection technology and high voltage power supply technology, without detection and power supply for auxiliary winding, the peripheral devices are more simple, saving the cost and volume of the system. UPSSL150 chip with high precision current sampling circuit, while the use of patented constant current control technology to achieve high accuracy of the LED constant current output and excellent line voltage regulator. The chip operates in the critical mode of inductor current and the output current is not changed with the increase of the inductance and the working voltage of LED. UPSSL150 has a variety of protection features, including LED short circuit protection, under voltage protection, over temperature adjustment function and so on. FEATURES * The integrated 500V power mos. * The integrated high voltage power supply function. * The inductor current critical continuous mode. * Without auxiliary winding detection and power supply. * The wide voltage input voltage. * ±5% LED output current accuracy. * The LED short circuit and open circuit protection. * The chip power supply under voltage protection. * The regulating function of overheating www.unisonic.com.tw Copyright © 2016 Unisonic Technologies Co., Ltd 1 of 10 QW-R125-044.a UPSSL150 Preliminary ORDERING INFORMATION Ordering Number Lead Free Halogen Free UPSSL150AG-AE2-R UPSSL150AG-S08-R UPSSL150AL-T92-B UPSSL150AG-T92-B UPSSL150AL-T92-K UPSSL150AG-T92-K UPSSL150BG-BE2-R UPSSL150BG-S08-R UPSSL150BL-T92-B UPSSL150BG-T92-B UPSSL150BL-T92-K UPSSL150BG-T92-K UPSSL150CG-CE2-R UPSSL150CG-S08-R UPSSL150CL-T92-C UPSSL150CG-T92-C UPSSL150CL-T92-K UPSSL150CG-T92-K LINEAR INTEGRATED CIRCUIT Package Packing SOT-23-3 SOP-8 TO-92 TO-92 SOT-23-3 SOP-8 TO-92 TO-92 SOT-23-3 SOP-8 TO-92 TO-92 Tape Reel Tape Reel Tape Box Bulk Tape Reel Tape Reel Tape Box Bulk Tape Reel Tape Reel Tape Box Bulk MARKING SOT-23-3 SOP-8 TO-92 3 L150X 2 ILED, RON 1 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 10 QW-R125-044.a UPSSL150 Preliminary PIN CONFIGURATION CS CS 1 8 DRAIN CS 2 7 NC CS 3 6 NC CS 4 5 VDD 3 2 1 DRAIN VDD SOT-23-3 SOP-8 3 DRAIN 2 CS 1 VDD TO-92 PIN DESCRIPTION SOT-23-3 1 2 3 - LINEAR INTEGRATED CIRCUIT PIN NO. SOP-8 5 1, 2, 3, 4 8 6, 7 TO-92 1 2 3 - PIN NAME VDD CS DRAIN NC DESCRIPTION Power Supply Float Ground and Current Sampling Pin The Internal High-Voltage Drain BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 10 QW-R125-044.a UPSSL150 Preliminary LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING (TA=25°C, Unless otherwise specified) PARAMETER SYMBOL VIN RATINGS UNIT -0.3 ~ 550 V VDD -0.3 ~ 8.5 V SOT-23-3 300 mW Power Dissipation PD SOP-8 800 mW TO-92 625 mW Junction Temperature TJ -45 ~ +125 °C TSTG Storage Temperature -55 ~ +150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. Input Voltage Supply Voltage RECOMMENDED OPERATION CONDITIONS PARAMETER Input Voltage Supply Voltage Reference Load Current Ambient Temperature SYMBOL VIN VDD ILOAD TA RATINGS 140 ~ 375 7~8 0 ~ 200 0 ~ +70 UNIT V V mA °C RATING 416 156 200 UNIT °C/W °C/W °C/W THERMAL RESISTANCES CHARACTERISTICS PARAMETER Junction to Ambient SYMBOL SOT-23-3 SOP-8 TO-92 θJA UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 10 QW-R125-044.a UPSSL150 Preliminary LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (TA=25°C, Unless otherwise specified) PARAMETER POWER SUPPLY SECTION Input Voltage Chip Operating Voltage Chip Starting Voltage Chip Starting Current Chip Operating Current Power Efficiency Power Factor CC SECTION The Precision of Constant Current Standby Power Consumption PROTECTION SECTION Short Circuit Protection Frequency Current Detection Threshold Edge Blanking Time Turn Off Delay Time TIME CONTROL SECTION Minimum Turn Off Time Maximum Turn off Time Maximum Turn-on Time POWER MOS SECTION LDMOS Withstand Voltage Conduction Resistance SYMBOL VIN VDD VDD_ON IST ICC η PF CC FST TEST CONDITIONS DRAIN=100V VDD rise VDD=6.2V ILED=100mA ILED=100mA MIN TYP MAX UNIT 85 7 6 0.5 120 0.88 0.4 220 7.3 6.2 1 180 265 7.8 6.5 2 300 V V V mA uA 0.5 0.7 ILED=0mA~200mA ±5 VIN=220AC RCS=3Ω 0.3 % W 2 3 4 KHz 580 620 TOFF_DELAY 600 500 200 mV ns ns TOFF_MIN TOFF_MAX TON_MAX 2.5 300 40 VCS_TH TLEB BV RON 500 IDS=0.1A UPSSL150A UPSSL150B UPSSL150C 550 30 18 12 us us us 600 V Ω Ω Ω TEMPER SECTION Over Temper Adjust 140 °C Over Temper Protect 160 °C Over Temper Hysteresis 20 °C Notes: 1. The parameters are not 100% tested in production. 2. The minimum, maximum range of standard specification by the test to ensure, typical values by design, test or analysis to ensure. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 10 QW-R125-044.a UPSSL150 Preliminary LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 10 QW-R125-044.a UPSSL150 Preliminary LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT (Cont.) BOM Reference R1 R2 C1 C2 CIN D1 ~ D4 D5 L0 U1 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Component 750K, 1206 3Ω, 1206 2.2nF / 1KV, 1206 2.2nF / 50V, 0805 6.8μF, 400V 1N4007 ES1J, SMA 4.7mH UPSSL150 7 of 10 QW-R125-044.a UPSSL150 Preliminary LINEAR INTEGRATED CIRCUIT APPLICATION INFORMATION UPSSL150 is a constant current driver IC for LED lighting, which is applied to the non isolated LED driver power supply. The 500V power switch is integrated in the chip, which is based on the constant current architecture and control method, and it can achieve excellent constant current characteristics with minimal external components. And without auxiliary winding power supply and testing, the system cost is very low. Start After the system is powered up, the input voltage is charged on the VDD pin through the jfet, and when the VDD voltage reaches the threshold value, the chip's internal reference circuit begins to work. When the chip is working normally, the required operating current is still through the supply of internal consumption. Constant current control The chip is detected the peak current, and the RCS resistance is connected to the input terminal of the peak comparator, which is compared with the threshold voltage 0.6V. When the RCS voltage reaches the threshold, the LED current is adjusted, and realized the constant current control. The formula for calculating the inductor peak current is IPK=600/RCS (mA). Among them, RCS is a current sampling resistor. The output of the comparator CS also includes a 500ns leading edge blanking time. The formula for calculating the LED average current is ILED=IPK/2. Among them, IPK is the inductor peak current. Protection function UPSSL150 built in a variety of protection functions, including LED short-circuit protection, LED open circuit protection, sampling circuit short-circuit protection, temperature regulation and protection, etc. When LED short circuit, the system works in the 3 KHz low frequency, so the power consumption is very low. Over temperature adjustment function UPSSL150 has the function of over temperature adjustment, the output current is gradually reduced when the driving power is over, so that the output power and temperature rise is controlled, the power supply is maintained at the set value, In order to improve the reliability of the system, the chip is internally set to adjust the temperature of the 140°C. PCB design In the design of PCB, you need to follow the following guidelines: VDD bypass capacitor is required to close the VDD pin of the chip. RCS resistor requires close to the CS pin of the chip Between RCS and VDD bypass capacitor resistor connected to the copper foil as short as possible CS pin increases in the area of copper clad to improve chip cooling. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 10 QW-R125-044.a UPSSL150 Preliminary LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS 2.2nF L 750K ES1J 6.8μF 4.7mH N U1 DRAIN CS VDD 3 2 1 2.2nF 3Ω TEST CIRCUIT Table 1. Efficiency and power factor test VI 85V 115V 132V 180V 230V 264V pF --0.552 ----0.496 --- VO (V) 61 61 60.4 117 116 116 IO (A) 0.0962 0.1031 0.102 0.1026 0.1008 0.1006 Pi (W) 6.6 7.04 6.92 12.9 12.65 12.64 η 88.91% 89.33% 89.03% 93.06% 92.43% 92.32% Table 2. Line Regulation & Load Regulation test VLED VIN 180VAC 230VAC 264VAC Line Regulation% 60V 80V 120V Load Regulation% 0.1042 0.1043 0.1045 ±0.15% 0.104 0.1038 0.1038 ±0.1% 0.1042 0.1021 0.1017 ±1.25% ±0.1% ±1.1% ±1.4% UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 9 of 10 QW-R125-044.a UPSSL150 Preliminary LINEAR INTEGRATED CIRCUIT TEST CIRCUIT (Cont.) UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 10 of 10 QW-R125-044.a